Permanent pacing in children: results of follow-up, assessment of complications

Abstract

Aim. To present the experience and assess the complications of permanent pacing in children with bradyarrhythmias based on long-term follow-up.Methods. Data of 145 children with structurally normal heart with implanted pacemakers at the age from 1 month to 18 years were retrospectively assessed. The follow-up was from 1999 to 2020 years. Epicardial pacemaker was implanted in 71 children, endocardial - in 74. The mean age of the primary implantation was 8.67±5.2 years.Results. The following complications were disclosed: hemodynamic complications (heart chamber enlargement in dynamics and/or development of dyssynchrony, the appearance and increase in the regurgitation degree on the atrioventricular valves), bacterial endocarditis, hemopericardium, subclavian vein occlusion, pericarditis, infection of the pacemaker and its pocket, leads dislocation and fracture. With epicardial pacing various complications were detected in 24 (33.8%) examined patients, with endocardial - in 37 (50%). Hemodynamic complications with epicardial permanent pacing are associated with intraventricular dyssynchrony due to implantation of a ventricular lead on the lateral wall or the right ventricular outflow tract. Hemodynamic complications were not recorded in patients that performed the implantation of an epicardial lead at the left ventricular (LV) apex.Conclusion. Children with pacemakers require careful follow-up. The most rational is the use of a primary epicardial pacemaker system with lead implantation on the apex of the LV. Such approach allows the veins to be preserved for endocardial stimulation at an older age, and to prevent hemodynamic complications. Neither epicardial nor endocardial pacemaker implantation guarantee the absence of complications. However, compliance with the above conditions will allow achieving high efficiency and safety of cardiac stimulation in children.